Model
Rovsun TIWC-10CRD1
Rank #143 means 142 of the 404 room air conditioner models we track cost less to run each year; the 65th efficiency percentile means it uses less energy for its size than 65% of those models.
What does the Rovsun TIWC-10CRD1 cost to run per year?
Among the 404 room air conditioner models we track, the Rovsun TIWC-10CRD1 sits in the below-average-cost group, rank #143, at roughly $93 a year. It uses 38% less energy than the U.S. federal standard model in its class, which would cost about $150/yr to run, a saving of roughly $57 a year. Efficiency-wise, once size is accounted for, it edges out 65% of the class, a modestly above-average showing. At a CEER of 15, its combined energy efficiency ratio is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the Rovsun RVTIW-10CRD1 at $93/yr runs a little cheaper and the Tcl H10W4KW at $93/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A room air conditioner typically stays in service for somewhere around 10 years; over that span, the Rovsun TIWC-10CRD1's $93/yr adds up to roughly $930 in electricity alone, before purchase price or repairs.
Also sold as: Black+Decker BD10NWES.
By the numbers
The Rovsun TIWC-10CRD1 normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $93/yr, here is what the Rovsun TIWC-10CRD1 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Rovsun TIWC-10CRD1 costs about $930. That is roughly $570 less than a standard model in its class, which would run closer to $1500 over the same ten years.
How the Rovsun TIWC-10CRD1 compares
The room air conditioner class we track runs from $51 to $389 a year. At $93/yr, it runs about $6 a year cheaper than the class median of $99, and it is about $42 a year more than the cheapest room air conditioner to run at $51. Against the US federal standard model for its class at about $150/yr, the Rovsun TIWC-10CRD1 uses 38% less energy.
What drives its running cost
At 10000 BTU/hr, the Rovsun TIWC-10CRD1 is a small room air conditioner for its class, which spans 5000 to 34100 BTU/hr with a median of 10100 BTU/hr, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. Its CEER of 15, above the class median of 15, reflects combined energy efficiency ratio: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- Combined Energy Efficiency Ratio (CEER). Two units with the same BTU rating can post very different running costs, and CEER is the figure that explains most of that gap.
- BTU cooling capacity. BTU rating scales with room size, and it is usually the first driver of an air conditioner's running cost, ahead of its CEER figure.
- Thermostat and mode usage. How the unit is actually operated, thermostat cycling versus a fixed setting, moves real electricity use more than the rated BTU or CEER figure alone.
Common questions
Is the Rovsun TIWC-10CRD1 cheap to run?
Yes. Its $93/yr running cost puts it at rank #143 of 404, below what most room air conditioner models we track cost to run.
How much does the Rovsun TIWC-10CRD1 cost per month?
About $7.73 a month, which is the $93 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 500 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $93 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Rovsun TIWC-10CRD1 for its size?
65th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_1151028_TIWC-10CRD1_08032024092400_9676782View certified room air conditioner listingsENERGY STAR data as of July 2026Rovsun and TIWC-10CRD1 are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.